1951 01 28.70  24.90  26.80 
1951 02 29.30  24.60  26.95 
1951 03 30.10  25.30  27.70 
1951 04 31.80  25.20  28.50 
1951 05 31.50  25.30  28.40 
1951 06 30.60  24.30  27.45 
1951 07 30.60  24.40  27.50 
1951 08 30.70  25.20  27.95 
1951 09 30.50  24.70  27.60 
1951 10 30.80  24.70  27.75 
1951 11 30.80  26.10  28.45 
1951 12 29.60  25.80  27.70 
1952 01 29.30  25.40  27.34 
1952 02 29.80  25.40  27.59 
1952 03 30.70  25.10  27.90 
1952 04 32.59  25.80  29.20 
1952 05 32.09  25.20  28.65 
1952 06 30.80  24.60  27.70 
1952 07 30.40  24.20  27.30 
1952 08 29.30  23.80  26.55 
1952 09 29.80  23.70  26.75 
1952 10 30.10  24.30  27.20 
1952 11 30.10  25.10  27.60 
1952 12 29.40  25.10  27.25 
1953 01 28.80  25.10  26.95 
1953 02 29.40  25.10  27.25 
1953 03 30.70  25.30  28.00 
1953 04 32.20  26.30  29.25 
1953 05 32.50  25.30  28.90 
1953 06 31.20  24.70  27.95 
1953 07 30.70  24.20  27.45 
1953 08 29.90  24.40  27.15 
1953 09 30.70  23.70  27.20 
1953 10 31.40  25.10  28.25 
1953 11 30.90  25.70  28.30 
1953 12 29.80  24.90  27.34 
1954 01 29.90  25.60  27.75 
1954 02 30.50  25.20  27.85 
1954 03 30.60  25.30  27.95 
1954 04 32.59  25.80  29.20 
1954 05 32.00  25.60  28.80 
1954 06 31.30  24.50  27.90 
1954 07 31.40  24.10  27.75 
1954 08 30.60  24.50  27.55 
1954 09 30.10  24.10  27.10 
1954 10 31.00  24.10  27.55 
1954 11 29.90  24.90  27.40 
1954 12 28.70  25.10  26.90 
1955 01 28.30  24.60  26.45 
1955 02 29.10  24.80  26.95 
1955 03 29.70  25.20  27.45 
1955 04 31.40  26.20  28.80 
1955 05 32.50  25.80  29.15 
1955 06 31.20  24.70  27.95 
1955 07 30.90  24.20  27.55 
1955 08 31.10  24.30  27.70 
1955 09 31.30  24.40  27.84 
1955 10 30.80  24.60  27.70 
1955 11 30.30  24.40  27.34 
1955 12 28.50  25.00  26.75 
1956 01 29.10  24.80  26.95 
1956 02 29.40  25.40  27.40 
1956 03 30.50  25.70  28.10 
1956 04 31.00  25.30  28.15 
1956 05 31.30  24.30  27.80 
1956 06 30.70  24.30  27.50 
1956 07 30.40  24.20  27.30 
1956 08 29.90  24.30  27.09 
1956 09 30.10  24.30  27.20 
1956 10 30.00  24.50  27.25 
1956 11 30.20  25.30  27.75 
1956 12 28.80  25.20  27.00 
1957 01 28.20  24.80  26.50 
1957 02 28.90  24.80  26.84 
1957 03 30.20  25.50  27.85 
1957 04 31.30  26.00  28.65 
1957 05 33.00  25.50  29.25 
1957 06 31.20  24.90  28.05 
1957 07 30.60  24.40  27.50 
1957 08 30.50  24.60  27.55 
1957 09 29.80  24.70  27.25 
1957 10 30.20  25.40  27.80 
1957 11 29.90  25.60  27.75 
1957 12 30.20  26.20  28.20 
1958 01 29.80  25.60  27.70 
1958 02 29.80  24.90  27.34 
1958 03 30.90  25.10  28.00 
1958 04 31.50  25.90  28.70 
1958 05 32.40  25.80  29.10 
1958 06 31.80  25.40  28.59 
1958 07 30.60  24.70  27.65 
1958 08 31.00  24.60  27.80 
1958 09 31.10  24.90  28.00 
1958 10 30.40  25.10  27.75 
1958 11 29.40  25.50  27.45 
1958 12 28.80  25.40  27.09 
1959 01 28.70  24.80  26.75 
1959 02 29.80  24.90  27.34 
1959 03 29.90  25.30  27.59 
1959 04 31.40  25.50  28.45 
1959 05 32.09  25.60  28.84 
1959 06 32.30  24.50  28.40 
1959 07 30.50  24.10  27.30 
1959 08 29.50  23.90  26.70 
1959 09 30.90  24.20  27.55 
1959 10 30.30  25.30  27.80 
1959 11 30.00  25.20  27.60 
1959 12 29.30  25.10  27.20 
1960 01 28.80  25.10  26.95 
1960 02 29.20  25.00  27.10 
1960 03 30.50  25.40  27.95 
1960 04 31.60  26.00  28.80 
1960 05 32.09  25.30  28.70 
1960 06 30.90  24.50  27.70 
1960 07 30.60  24.30  27.45 
1960 08 30.50  25.10  27.80 
1960 09 30.50  24.40  27.45 
1960 10 29.90  24.90  27.40 
1960 11 30.10  25.30  27.70 
1960 12 29.30  24.10  26.70 
1961 01 28.00  24.30  26.15 
1961 02 28.80  24.70  26.75 
1961 03 30.60  25.00  27.80 
1961 04 31.30  26.10  28.70 
1961 05 31.80  25.30  28.55 
1961 06 30.60  24.20  27.40 
1961 07 30.50  24.00  27.25 
1961 08 30.00  24.30  27.15 
1961 09 30.20  24.20  27.20 
1961 10 30.40  24.10  27.25 
1961 11 30.30  25.70  28.00 
1961 12 29.80  25.40  27.59 
1962 01 28.70  24.90  26.80 
1962 02 28.10  24.00  26.05 
1962 03 30.10  25.20  27.65 
1962 04 31.50  26.10  28.80 
1962 05 32.20  25.80  29.00 
1962 06 31.90  24.10  28.00 
1962 07 30.40  24.40  27.40 
1962 08 30.60  24.30  27.45 
1962 09 30.40  24.30  27.34 
1962 10 31.20  25.00  28.10 
1962 11 30.10  25.10  27.60 
1962 12 29.30  25.30  27.30 
1963 01 28.40  24.40  26.40 
1963 02 28.20  23.80  26.00 
1963 03 29.20  24.60  26.90 
1963 04 30.20  25.50  27.85 
1963 05 32.20  26.00  29.10 
1963 06 31.20  24.70  27.95 
1963 07 31.30  24.40  27.84 
1963 08 30.70  24.00  27.35 
1963 09 30.80  24.40  27.59 
1963 10 30.50  24.70  27.60 
1963 11 30.80  25.80  28.30 
1963 12 29.70  24.90  27.30 
1964 01 29.70  25.10  27.40 
1964 02 29.10  24.80  26.95 
1964 03 30.30  25.10  27.70 
1964 04 31.50  26.10  28.80 
1964 05 31.80  25.60  28.70 
1964 06 31.60  24.30  27.95 
1964 07 31.20  24.30  27.75 
1964 08 31.30  24.50  27.90 
1964 09 30.80  24.30  27.55 
1964 10 30.70  24.40  27.55 
1964 11 30.00  23.90  26.95 
1964 12 29.00  25.10  27.05 
1965 01 28.50  24.40  26.45 
1965 02 28.80  24.50  26.65 
1965 03 29.60  24.90  27.25 
1965 04 31.50  25.50  28.50 
1965 05 32.59  24.70  28.65 
1965 06 31.20  24.40  27.80 
1965 07 30.20  24.20  27.20 
1965 08 31.40  24.00  27.70 
1965 09 31.10  24.20  27.65 
1965 10 31.00  24.70  27.85 
1965 11 30.70  24.90  27.80 
1965 12 29.60  25.10  27.35 
1966 01 29.50  24.50  27.00 
1966 02 29.90  24.70  27.30 
1966 03 31.10  24.80  27.95 
1966 04 32.80  25.70  29.25 
1966 05 32.20  24.90  28.55 
1966 06 32.09  24.80  28.45 
1966 07 31.00  24.40  27.70 
1966 08 32.00  24.90  28.45 
1966 09 31.80  25.10  28.45 
1966 10 31.00  24.70  27.85 
1966 11 31.40  24.80  28.09 
1966 12 30.60  25.50  28.05 
1967 01 28.50  24.30  26.40 
1967 02 28.40  24.50  26.45 
1967 03 29.80  24.60  27.20 
1967 04 31.90  25.30  28.59 
1967 05 32.70  25.60  29.15 
1967 06 31.90  25.30  28.59 
1967 07 30.90  24.30  27.59 
1967 08 30.40  24.60  27.50 
1967 09 30.80  24.40  27.59 
1967 10 30.60  24.50  27.55 
1967 11 30.20  25.00  27.60 
1967 12 28.80  25.00  26.90 
1968 01 28.30  24.20  26.25 
1968 02 28.60  24.10  26.35 
1968 03 30.30  25.00  27.65 
1968 04 31.30  26.10  28.70 
1968 05 33.09  25.40  29.25 
1968 06 32.90  24.90  28.90 
1968 07 32.09  25.00  28.55 
1968 08 31.30  25.00  28.15 
1968 09 31.20  24.80  28.00 
1968 10 30.40  25.40  27.90 
1968 11 29.10  24.80  26.95 
1968 12 28.80  25.10  26.95 
1969 01 29.50  24.50  27.00 
1969 02 29.50  24.00  26.75 
1969 03 30.50  24.50  27.50 
1969 04 32.09  26.60  29.34 
1969 05 33.09  26.10  29.59 
1969 06 32.50  24.90  28.70 
1969 07 30.50  24.60  27.55 
1969 08 31.20  24.80  28.00 
1969 09 31.30  24.60  27.95 
1969 10 31.00  25.30  28.15 
1969 11 30.80  25.90  28.34 
1969 12 29.80  25.60  27.70 
1970 01 30.00  25.60  27.80 
1970 02 29.40  25.10  27.25 
1970 03 30.90  23.70  27.30 
1970 04 32.00  26.60  29.30 
1970 05 33.20  26.20  29.70 
1970 06 31.70  24.60  28.15 
1970 07 30.90  24.70  27.80 
1970 08 31.30  24.30  27.80 
1970 09 31.50  24.30  27.90 
1970 10 31.10  24.80  27.95 
1970 11 31.20  25.70  28.45 
1970 12 30.30  25.90  28.09 
1971 01 28.80  24.80  26.80 
1971 02 29.20  25.20  27.20 
1971 03 29.30  24.70  27.00 
1971 04 30.60  25.00  27.80 
1971 05 32.40  24.80  28.60 
1971 06 30.30  23.40  26.84 
1971 07 31.00  24.10  27.55 
1971 08 31.20  23.10  27.15 
1971 09 31.40  23.60  27.50 
1971 10 30.50  24.90  27.70 
1971 11 30.10  24.90  27.50 
1971 12 29.90  25.80  27.84 
1972 01 29.00  25.60  27.30 
1972 02 29.80  25.40  27.59 
1972 03 30.40  24.70  27.55 
1972 04 31.60  26.40  29.00 
1972 05 32.80  24.70  28.75 
1972 06 32.70  24.90  28.80 
1972 07 31.10  25.90  28.50 
1972 08 31.90  24.10  28.00 
1972 09 31.30  24.60  27.95 
1972 10 31.90  25.30  28.59 
1972 11 31.10  26.00  28.55 
1972 12 30.10  24.80  27.45 
1973 01 30.00  24.20  27.10 
1973 02 30.30  24.10  27.20 
1973 03 30.90  24.40  27.65 
1973 04 32.00  25.20  28.60 
1973 05 33.40  25.60  29.50 
1973 06 32.90  24.80  28.85 
1973 07 31.50  24.60  28.05 
1973 08 31.70  24.20  27.95 
1973 09 31.10  24.00  27.55 
1973 10 30.90  25.40  28.15 
1973 11 30.80  25.80  28.30 
1973 12 29.70  25.30  27.50 
1974 01 29.10  24.30  26.70 
1974 02 29.60  24.60  27.10 
1974 03 30.30  24.80  27.55 
1974 04 31.90  25.60  28.75 
1974 05 32.59  25.10  28.84 
1974 06 31.70  24.50  28.10 
1974 07 31.60  24.20  27.90 
1974 08 32.09  24.80  28.45 
1974 09 32.30  24.20  28.25 
1974 10 30.40  24.30  27.34 
1974 11 30.40  24.80  27.59 
1974 12 30.00  24.80  27.40 
1975 01 29.40  24.30  26.84 
1975 02 29.40  24.40  26.90 
1975 03 30.70  24.60  27.65 
1975 04 31.30  25.60  28.45 
1975 05 31.20  25.00  28.10 
1975 07 31.00  24.00  27.50 
1975 08 31.90  25.00  28.45 
1975 09 31.20  24.00  27.60 
1975 10 31.10  24.50  27.80 
1975 11 31.10  25.50  28.30 
1975 12 30.50  23.70  27.10 
